(19)

(11)

EP 0 746 866 A1

(12)

(43) Date of publication: 11.12.1996 Bulletin 1996/50 (21) Application number: 95936074.0 (22) Date of filing: 21.11.1995

(51) International Patent Classification (IPC):  H01J 5/ 50( . ) H01J 5/ 60( . ) H01J 61/ 36( . ) H01J 5/ 56( . ) H01J 61/ 34( . ) (86) International application number: PCT/IB1995/001040 (87) International publication number: WO 1996/020493 (04.07.1996 Gazette 1996/30)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 23.12.1994 EP 19940203750 (71) Applicant: PHILIPS ELECTRONICS N.V. 5621 BA Eindhoven (NL)	(72) Inventors: WESTEMEYER, Manfred D-5173 Aldenhoven (DE) KOHL, Johann, Josef D-52080 Aachen (DE) SCHÄFER, Ralf D-52062 Aachen (DE) (74) Representative: Rooda, Hans, et al  INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6 5656 AA Eindhoven 5656 AA Eindhoven (NL)